. Railway mechanical engineer . i in. thick; shearing 3-in. by 9 stock, l,>^-in. round stock, and 2-in. by 2-in. by 3/16-in. angle-iron; and splitting plate up to 7/16 in. thick. Thestandard throat dimensions are made 6, 12, 18 and 24 largest size machine has a capacity for punching a 23/2- December. 1922 RAILWAY MECHANICAL EXGIXEER 733 in. hole through mild steel plate 1 in. thick; shearing lj4-iii- flat stock, 23-2-in. round stock and 6-in. by 11/16-in. angle-iron; and splitting plate up to 15/16 in. thick. The standard depths of throat for machines of th
. Railway mechanical engineer . i in. thick; shearing 3-in. by 9 stock, l,>^-in. round stock, and 2-in. by 2-in. by 3/16-in. angle-iron; and splitting plate up to 7/16 in. thick. Thestandard throat dimensions are made 6, 12, 18 and 24 largest size machine has a capacity for punching a 23/2- December. 1922 RAILWAY MECHANICAL EXGIXEER 733 in. hole through mild steel plate 1 in. thick; shearing lj4-iii- flat stock, 23-2-in. round stock and 6-in. by 11/16-in. angle-iron; and splitting plate up to 15/16 in. thick. The standard depths of throat for machines of thissize are 15, 24, 36 and 48 in., which sizes provide for cov-ering an extremely wide range of work. New Sizes of Engine Lathes Brought Out UNTIL recently the Oliver Machinery Company, GrandRapids. !Mich., confined its engine lathe line to sizesfrom 16-in. to 30-in. swing inclusive. These lathesare now made, however, in 10, 12 and 14-in. sizes, the Oliver 12-ln. All Steel Geared Head Engine Lathe lathe being illustrated. The new machines are versatile,being adapted to a wide variety of turning, threading andscrew cutting operations. Cone pulley or all-steel geared head stocks may be fur-nished, and either belt or motor drive. The single pulleydrive geared head stock is of the enclosed box type, fittedwith steel gears running in oil. All head stocks are equippedwith a positive tooth feed reversing clutch by means of whichboth the longitudinal and cross feed and the direction of thelead screw may be instantly reversed. This can be accom-plished witliout engaging or disengaging gears, stopping thelathe, shifting belts or reversing the spindle rotation. Thisfeature greatly simplifies tlie cutting of threads and decreasesthetime of operation. Thoroughly tested and valuable fea-tures of construction are included in the carriage, apron andtai)er attachment. The latter can be readily applied laterif not specified when the lathe is purch
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
